"Google has unveiled a free program called Google Customized Search Engine that lets users tailor a search index to their content specifications, InfoWorld reports. You can select keywords for the index, as well as which Web sites will be included or excluded in the search. You also may customize the look and feel of the engine. The trade-off? When you implement the index on your Web site or blog, it will be populated with Google text ads via Google's lucrative AdSense Program. On the plus side, you do get paid for click-throughs."